Pressure-regulator.



I. C. HAGEY.

PRESSURE REGuLAToR. APPLICATION FILED MAY Il, 903. 1,225,619. PatentedMay 8, 1917.

2 SHEETS-SHEET I.

J. C. HAGEY.

PRESSURE REGULATOR.

APPUCATIN FLED MAY H 908- 1,225561 9. Patented May 8,1917.

2 SHEETS-SHEET 2.

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UNITED sTATEs PATENT oEEIoE.

JAMES CLARKE HAC-EY, OE CHICAGO, ILLINOIS, AssIeNOE or ONE-HALE To TIIECABLE COMPANY, OE CHICAGO, ILLINOIS, A CORPORATION OE ILLINOIS.

PRESSURE-REGULATOR.

.To all wiz/0m t f//my/ concern Be 1t known that I, JAMES CLARKE HAGEN,

a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented new and useful I'mprovementsin Press'ure-Regulators, of which the following isa specification.

My invention relates to automatic regulation of fluid pressure and oneobj ect thereof is to provide' a simple' and etlicient regulatingdevice.

Another object o-f my invention is to provide means through which thedegree of automatic regulation may be instantly Varied eitherautomatically or at will.

The invention is particularly applicable to pneumatically operateddevices for playing musical instruments and includes in a modified formone of the devices shown and described in my application, Serial No.280,304, filed Sept. 9.7, 1905.

Figure l is a partly sectional front View showing my improvedconstruction of the pressure-controlling system of an automatic musicalinstrument;

Fig. 2 is a similar view showing a modilication of my regulating devicein connection with a pressure-controlling system arranged upon customaryprinciples;

Fig. 3 is an enlarged view in vertical section of the regulating deviceshown in Fig. l; and

Fig. 4 is an enlarged view in vertical section of the regulating deviceshown in Fig. 2.

I have shown and will describe the invention. in connection with anautomatic playing device for musical instruments operated by windpressure less than atmospheric pressure, that is, suction7 or as Iprefer to term it, wind-tension, but I do not wish to be limited to theuse of the invention in connection with this particular class ofdevices', as it will be readily understood that slight constructivemodifications will ada-pt it for use in such automatic playing devices'when operated by wind-pressure greater than' atmospheric pressure andthat the exact principles and purposes may be retained when used inconnection with other fluids than air and upon other mechanisms thanthose connected with musical instruments.

Pneumatically-operated' music-playing devices are usually controlled bya moving note-selective means, such as a perforated l sheet, andcomprise at least two pneumatic Sp'ecification of Letters Patent;

Patented May 8, 1917.

Appcl'tion lediMa'y 1.1, 1908. Serial 110.432,200.

divisions wherein the wind-tension is under separate regulation andcontrol, as, for Instance, the note-sounding division and thecontroller-propelling division.

I provide a regulating device which may be advantageously used inconnection with either one of these divisions, furnishing unusuallysensitive response to the spasmodic demands of the pneumatics of thenotesounding division when connected therewith and unusually evenregulation of the windtension when connected with thecontrollerpropelling division.

A regulating bellows, or chamber, is usually employed for maintainingthe lightest desired wind-tension in the wind-ways leading to thepneumatics of the note-sounding` division for pianissimo effects and ifthis wind-tension is to be varied to produce fortissimo effects suchvariation is accomplished by operating a manually-controlledconstricting valve situated somewhere in the said wind-ways to permitdirect communication with a high-tension reservoir or thepumpingmechanism. I have found that the most desirable regulatormaintaining this light tension is one possessing the minimum reservoircapacity consistent'. with an elficicnt regulation of ample valve-portarea. A sulliciently large valve-port should be opened or closedsimultaneously with the varying demand from the pneumatics andv suchsimultaneous action is not found in constructions wherein the regulatingchamber is of dimensions large enough to constitute a substantialreservoir. Diiiiculty has been experienced in combining a small enoughregulating chamber with a large enough valveport, as variation in thedegree of windtension supplied by the pumping mechanism acts upon theface of the regulator-valve exposed thereto and modifies the action ofthe regulator.

In Figs. 2 and 4L, I have illustrated that part of my invention claimedby me to eliminate this difliculty and this part of the device iscomplete in itself in so far as concerns absolute regulation ofwind-tension at an established degree.

Wind-tension is produced in the chamber A by means of ay suitablepumping mechanism (not shown) and under normal conditions may extendwithout limitation to the pneumatics (not shown) of the note-soundingdivision through open ports B and C link M and through such adjustmentregu- Y lates the degree of tension in the regulating chamber at a pointdetermined by the spring` H. Connection of chamber E is made With thenote-sounding pneumatics through port I and passages J and D. Adjustmentof the constricting valve K varies the opening ot port B and thereforethe operation ot' the note-sounding pneumatics by the full power ofWind-tension in chamber A, and complete closure of this port preventsthe said operation except by the reduced degree of tension in theregulating chamber Il.

I have indicated by the letter N, at the right hand end of Figs. l and2, a duplication of the regulating device, shown in each iigure at theopposite end thereof, compris-- ing the chamber E and other componentparts. N represents the chamber E arranged for control of thewind-tension Jor the controller-propelling division. Under certainconditions, the Wind-tension in chamber A may extend Without limitationto the propelling device (not shown) through the open port O and passageP (see Fig. l), but normally this port is closed and t-he operation ofthe propelling device is limited to the reduced degree of tension in theregulating chamber N. rlhe windvvays extending from chamber A throughchamber N to port (Fig. l) are arranged reversely to those shown inconnection with chamber E, at the opposite end of Fig. 2, and the portsB and V are relatively similar to the ports O and Q, so that regulatedtension may extend from the chamber N to the propelling device throughport Q and passage P. Adjustment of the valve R varies the opening ofport Q, and therefore the operation of the propellingv device,

Under certain conditions, it is desirable to render the note-soundingdivision inoperative and I have shown means for this purpose comprisingvalves S and 'l Which may be drawn across the ports V and Crespectively. It is the usual custom to connect these valves forsimultaneous movement with the valve W (see Fig. l) so that the ports Vand C may be closed and the port O opened by a single movement and thearrangement reversed by reversal of the movement.

I have described the parts usually employed in devices of this class andtheir purposes and I shall now explain the construction and operationvof my improvements.

l (Figs. 3 and fl) is a pneumatic having a hinged movable member 2 andprovided therein With an inlet 3. The pneumatic is secured to a rigidsupporting arm a in such position that the member 2 may act as a valveover the port G. The member 2 is provided upon its face with suitablepacking to insure tight closure over the port and its operation may beaccomplished in any desirable manner. I employ the usual valvestem orlink M for this purpose.

During operation, windtension in the chamber A may exhaust theregulating chamber E through the valve-controlled port G and move themember L under tension of the spring H. Such movement of the member Loperates the member 2 of the pneumatic l by means of link M to vary theopening of port G. The spasmodic and variable admission of air throughport I from the "Lote-striking pneumatics causes a compensatingadjustment of the member 2. When this member is held closed over theport G, the same degree of wind-tension acts upon the opposite sides ofthe said member through inlet 3. The port area covered by member 2 andthe area of the said member exposed in the pneumatic l are directlyproportionate and I find that, when the proportions o' these areas arecorrectly established, delicate and positive regulation ot wind-tensionmay be effected by a relatively small regulating chamber. The `pneumatic1 in this manner constitutes a practically constructed balanced valve.

The further development of my invention has te do With the eliminationof a dil'liculty that has been experienced in the control ofWind-tension in instruments employingl the described constricting valve.The area ot the port controlled by this valve bears a definite relationto the total cubic volume ot the pneumatics to be simultaneouslyoperated. There one pneumatic is to be operated, the constricting valvemust be set at a certain position, and, Where a number are to beoperated simultaneously, the valve must be moved to a new position inorder to permit operation of the greater number with the same power. Aconstant readjustment ot this valve is therefore necessary in o fder toproduce, even approximately, the desired etiiect, and, since the demandfrom the pneumatics is constantly varying, it is almost impossible toproperly manipulate this con-- stricting valve. I purpose itselimination, therefore, and depend upon the automatic ,regulation ot thevalve controlled by the regulating chamber to compensate tor lhevariation in the demand from the pneumatics.

In such an instance, I employ a quicklygathering spring (Il, Figs. l andto provide tension in the regulating chamber F., that is, a spring Whichquickly increases .in power as it is moved from inactive position. Iextend the link or stem M tar enough beyond the member Il of the chamberE to atford attachment therewith oli a device mounted upon and movablewith the said member. This device may be of a .f'ariety of constructionsand may either be operated manually or pneumatically. it consists,however, of a mechanism for adjusting the distance between the twomembers and li. 1f the link lil is pulled ontwardly from the chamber Eby the said mechanism then the member 2 must move nearer the member Land consequently the said member L must expand the spring .l-l to anincreased degree in order to close the member 2 over the port G.rtherefore, if the link M is varied in its position with relation to themember L the tension of the spring H must also be varied andconsequently the wind-tension in the chamber E.

To obtain a gradual variation in the wind-tension, it may be advisableto manually adjust the controlling mechanism thus described and l haveshown a means for such manual adjustment. in Fig. 1, comprising link 5,crank 6, link 7, and controlling lever S. ln instances demanding quicklyaccentuated effects, l prefer to employ a pneumatic as at 9 which isprovided with tubes or nipples 17, expanded by the spring 11, andoperatively connected with the link M by an arm extending beyond itshinged end. Under this arrangement` collapse of the pneumatic draws thelink outimrdlv from chamber E. j

Pneumatic collapse or inflation of the pneumatic 9 may be accomplishedby means of a valve controlled in turn either by the controlling-sheetor by a conveniently located finger-piston. 1 have considered itunnecessary to further complicate the drawings for the purpose ofshowing this valve or the method of its control, as any particular formof valve for this purpose is not a part of this invention.

l have shown an adjustable nut upon the link 5 which will act againstthe lug or screw-eye 10 when moved to adjust the movable member of thepneumatic 9 in a collapsing direction but will not interfere with thepneumatic collapse thereof at any point in this manually adjustedmovement.

lt will thus be seen that l, provide construction by which, whenconnected with the note-sounding division, the degree of tension forojierating the pneumatics may be varied either at will, withoutperiencing the hereinbefore described diliieulty in manipulation of aconstrieting valve, or by the controlling-sheet.

1n the type of automatic music-playing instruments employing aperforated controlling-sheet, the said sheet is drawn across atracker'having apertures therein for registration with the perforationsin the sheet. The majority of these instruments are operated by varyingdegrees of wind-tension and this tension is transmitted to the aperturesof the tracker by 4means well known to those conversant with the art.rlhe sheetpropelling device should operate to give uniform movement atadjustable predetermined degrees of speed. well recognized difficulty.in obtaining` this uniform movement due to the fact that increase inthe degree of wiiul-tension for variation in musical expression alsoincreases the tension in the tracker-apertures.and adds to the frictionof the sheet against the tracker. This amounts to a continual variation.in the load upon the she-e -propelling device. lt has been consideredadvisable to regulate the wind-tension for operation of the propellingdevice at an unvarying degree and to permit adjustment through avalve-controlled port located between the regulating device and the saidpropelling device. As thel operating tension is unvarying and the loadis variable, it is obvious that variation must occur in the speed of thepropelling device.

My improved regulating device, when used in connection with thecontroller propelling division, provides compensation for the describedvariation in load.

1t will be seen, upon reference to Fig. 3, that the working length ofeach of the springs H and 11 may be adjusted by transfixing the springswith the pins 14 and 16 at any desired point and the movable members ofthe chamber E and pneumatic 9 may be adjusted in connection with therespective springs by means of the screw-nuts 12 and 13.

The device is rst placed in position as shown at N in Fig. 1 but thetubes are not connected therewith. The degree of wind-tension in chamberN is then determined for correct operation of the propelling device byadjustment of the nut 12 (Fig. Such adjustment should be made with afairly uniform tension in the chamber A, as, otherwise, the consequentvariation in the load, hereinbefore described but not yet cared for,would modify the action of the propelling device.

The tubes 15 are then slipped over the nipples 17. rlhese tubeslead fromthe interior of pneumatic 9 to any convenient point of attachment withsuch windways as may be luider the same degrees of variable tension asthe tracker-apertures. The tension in the windways, to which the tubes15 are connected. is then reduced to the lightest degree desired fornote-sounding purposes and the nut 13 is adjusted to apply onlysufiicient tension from the spring. 11

to prevent a partial collapse of pneumatic 9 by this lightest desireddegree of tension. Upon increase of tension in the windways mentioned tothe maximum degree desired, a second adjustment of the tension of spring11 is made by means of pin 1G to correct the \\'orling length. of thespring. The spring should be strong enough to prevent complete collapseof pneumatic 9 excepting by the most extreme degree of high tension inthe note-sounding d' vision. Such regulation by means of the pin isintended to vary the inherent gathering power of the spring andnaturally affects the former adjustment by means of the nut 13. The saidnut must then be readjusted to restore only sufficient tension of thespring upon the movable member of the pneumatic to prevent partialcollapse thereof by the before- .mentioned lightest desired degree oftension in the note-sounding division.

By this method of double-adjustment of the spring l1, the pneumatic willremain expanded under the said lightest desired degree of wind-tensionand the degrees of its collapse will be proportionate with the increaseof tension in the note-sounding division and the tracker-apertures.

Following the adjustment of spring 1l, a corresponding adjustment may bemade of the spring II to complete the compensating feature of .'myinvention. The working length of this spring may be corrected by meansof the pin 14. 'Ihe spring s hould be strong enough to cause asufficient degree of wind-tension in chamber N for the proper operationof the propelling mechanism during the presence of the maximum degree oftension in the tracker-apertures of the notesounding division. The nutl2 will have to be ire-adjusted to restore the correct` tension to thespring II Aafter disturbance thereof by the adjustment of pin lil. rIhismay be easily done upon disconnection of the tubes l5. .The varyingdegrees of wind-tensionfor musical expression in the note-soundingdivision acts, as hereinbefore stated, in the tracker-apertures and mustextend thereto through passage D. I have therefore shown connection ofthe tubes 15, in Fig. l, with a chamber in direct communication withthis passage D.

The operation of my device, shown in Figs. l, and 3, for regulation ofwind-tension in connection with the controller-propelling` division, isas follows: TNin 1ltension may be produced in chamber A at varyingdegrees according to the operation of the pumping mechanism, but mynovel construction of the regulating valve controlling port G serves tomaintain in chamber N a degree of tension unaffected by this variation.N (Fig. l) is a duplication of chamber Il Variation in the tension inthe passage D and consequently in the tracker-apertures, however,directly affects the tension in chamber N by means of tubes 15 andpneumatic 9. So long as the tension in passage D is the lightestdesired, the spring 1l prevents even a partial collapse of pneumatic 9,but, upon an increase thereof, the

said pneumatic proportionatclj' collapsed and the movable member Q isdra .rn nearer the member Ia of chamber N. The member Ii is instantlycompelled to increase the cxpansion of spring II in order to maintainregulation of tension under this shifted relative position of the memberIncrease in the degree of tension in the passage D therefore causesproportionate increase in the degree of tension in chamber N, which. isthe effect desired.

It will thus be seen that, when increased. tension in thetracker-apertures causes an increase in the load for the propellingdevice, a simultaneous and compensating increase is effected in thepower applied to operate the said device.

The principles of the invention herein described may be applied equallywell in pressure regulators for gas, wherein an automatic increase inthe degree of regulated pressure is desired to compensate for anincrease in consumption, and the same principles may be employed inautomatic water-v heating devices, whcrcin the water-pressare at a givenpoint may determine the regulation of the heat-producing fluid. Manyother devices may be improved by the employment of my invention and Idesire, therefore, not to be limited to its use in connection with theparticular mechanisms herein shown and claimed.

I claiml. The combination, with a pressure chamber, apressure-regulating chamber, a communication between said chambers, avalve controlling said communication and means for automaticallyoperating said valve upon pressure-variation in said regulating chamber,of a perforation in said valve and means (l) operable through saidperforation to act with counterbalancing effect upon said valve.

2. In combination with a pressure chamber, a pressure regulatorcomprising a chamber (E), a communication between the pressure chamberand said chamber (E), a valve (2) positioned upon movement to close saidcommunication7 means (L) operating to move said valve uponpressurevariation in said chamber (E), means (l) to act withcounterbalancing effect upon said valve and a perforation in said valvethrough which the second named means communicates with the pressurechamber upon closure of said communication by said valve.

3. In a pressure regulator, the combination, with a pressure chamber, apassage for communication with said chamber and a valve acting uponvariation in the degree of pressure in said chamber to control thecommunication of said passage, of a second chamber operatively connectedto act with counterbalancing effect upon said valve durfil communicationwith said chamber and avalve acting upon variation in the degree ofpressure in said chamber to control the communication of said passage,of a perforation in said valve andan auxiliary' chamber in communicationwith said perforation.

5. ln combination with a pressure chamber, a pressure regulatorcomprising a chamber (E), a communication (G) between the pressurechamber and said chamber (E), a valve (2) positioned upon movement tocontrol said communication, said valve otl'ering one of its faces to thepressure in the pressure chamber, a second chamber (l) operativelyconnected with said valve and an opening (3) in said valve through whichthe pressure in the pressure chamber may act in said second chamber withcounterbalancing effect upon said valve.

6. The combination of a regulating pneumatic having a vibratory leaf ormember, a passage communicating with the interior of said pneumatic, anda. second pneumatic arranged within said regulating pneumatic, saidsecond pneumatic having a swinging or vibratory leaf or member connectedwith the vibratory member of said regulating pneumatic, said swingingleaf of said inner pneumatic providing a valve for said passage andbeing movable by said vibratory member of the regulating pneumaticindependently of the other leaf or member of said inner pneumatic.

7. The combination with a main pneumatic provided with a port or passageto be regulated, a small or supplemental pneumatic arranged within saidmain pneumatic and forming a valve for said port, and means whereby saidsupplemental pneumatic is opened and closed so as to control said portby the movement of the vibratory member of said main pneumatic.

8. The combination with main pneumatic provided with a port or passageto be regulated, a small or supplemental pneum atie arranged within saidmain pneumatic and forming a valve for said port, and mechanicalconnection with the vibratory member of the supplemental pneumatic foractuating said member independent of the other member by the movement ofthe vibratory member of the main pneumatic.

9. The combination with a main pneumatic having a port or passage to beregulated, a supplemental pneumatic confined within said main pneumaticand mounted rigidly therein, the swinging or vibratory leaf of saidsupplemental pneumatic providing a valve for said port, and a connectionfrom said vibratory member of said supplemental pneumatic to thevibratory member of the main pneumatic, whereby the movement of thelatter operates said movable member of the supplemental pneumatictocontrol said port.

10. rhe combination of a main pneumatic having a port to be regulated, asupplemental pneumatic arranged within said main pneumatic and rigidlymounted therein, said supplemental pneumatic having its swinging membermounted to control said port, and a rod connected with the swingingmember of said supplemental pneumatic and also connected with themovable member of the main pneumatic, whereby the movement of the latteractuates the former to control said port.

11. The combination of a. mai-n pneumatic having a port to beregula-ted, a supplemental pneumatic arranged within said main pneumaticand rigidly mounted therein, said supplemental pneumatic having itsswinging member mounted to control said port, a rod connected with theswinging member of said supplemental pneumatic and also connected withthe movable member of the main pneumatic, whereby the movement of thelatter actuates the former to control said port, and a third pneumaticmounted upon the vibratory member of the main pneumatic and connectedwith said rod which is connected with the swinging member of thesupplemental pneumatic.

12. The combination of a main pneumatic having a. port to be regulated,a supplemental pneumatic arranged within said main pneumatic and rigidlymounted therein, said supplemental pneumatic having its swinging membermounted to control said port, a rod connected with the swinging memberof said supplemental pneumatic and also connected with the movablemember of the main pneumatic, whereby the movement of the latteractuates the former to control said port, a third pneumatic mounted uponthe vibratory member of the main pneumatic and connected with said rodwhich is connected with the swinging member of the supplementalpneumatic, and tension springs controlling the swinging member of themain pneumatic and also controlling said third mentioned pneumatic.

13. rihe combination of a main pneumatic having a port to be regulated,a supplemental pneumatic arranged within said main pneumatic and rigidlymounted therein, said supplemental pneumatic having its siifingingmember mounted to control said port, a rod connected with the swingingmember of said supplemental pneumatic and also connected with themovable member of the main pneumatic, whereby the movement of thelatter` actuates the former to control said port, a third pneumaticmounted upon the vibratory member of the main pneumatic and connectedwith said rod which -fie is connected with the swinging member of thesupplemental pneumatic, tension springs controlling the swinging memberof' the main pneumatic and also controlling said third mentionedpneumatic, and means whereby said springs may be adjusted in length tovary their tension.

14. The combination of a main pneumatic having a port to be regulated, asupplemental pneumatic arranged within said main pneumatic and rigidlymounted therein, said supplemental pneumatic having its swinging membermounted to control said port, a rod connected with the swinging memberof said supplemental pneumatic and also connected with the movablemember of the main pneumatic, whereby the movement of the latteractuates the former to control said port, a third pneumatic mounted uponthe vibratory member of the main pneumatic and connected with said rodwhich is connected with the swinging member of' the supplementalpneumatic, tension springs controlling the swinging member of the mainpneumatic and also controlling said third mentioned pneumatic, and meansfor controlling the pneumatic pressure within said third pneumaticindependently of the pressure in the other pneumatics.

1,5. The combination of a main pneumatic having a port to be regulated,a supplemental pneumatic arranged within said main pneumatic and rigidlymounted therein, said supplemental pneumatic having its swinging membermounted to control said port, a rod connected with the swinging memberof said supplemental pneumatic and also connected with the movablemember of the main pneumatic, whereby the movement of the latteractuates the former to control said port, a third pneumatic mounted uponthe vibratory member of the main pneumatic and connected with said rodwhich is connected with the swinging member of the supplementalpneumatic, tension springs controlling the swinging member of the mainpneumatic and also controlling said third mentioned pneumatic, and meanswhereby the spring 'for said third pneumatic may be independentlyadjusted.

1G. r1`he combination of a main pneumatic having a port to be regulated,a supplemental pneumatic arranged within said main pneumatic and rigidlymounted therein, said supplemental pneumatic having its swinging membermounted to control said port, a rod connected with the swinging memberof said supplemental pneumatic and also connected with the movablemember of the main pneumatic, whereby the movement of the latteractuates the former to control said port, a third pneumatic mounted uponthe 'vibratory member of the main pneumatic and connected with said rodwhich is connected with the swingingmember of the supplementalpneumatic, tension springs controlling the swinging member of the mainpneumatic and also controlling said third mentioned pneumatic, and meanswhereby the springfor said third pneumatic may be independentlyadjusted, said means comprising a manually operable lever andconnections between the same and said spring.

17. The combination with first and second fluid pressure systems, of apressure regulator operated by and acting upon the pressure in the firstof said systems, and means 4through which varying changes in pressure inthe second of said systems may determine the pressure which saidregulator automatically acts to maintain in the first of said systems.

18. The combination with first and second fluid pressure systems, of amember movable by the pressure in the first of said systems into variouspositions between thc extremes of its movement, the various positions ofsaid member being indicative of various pressures in the first of saidsystems, a pressure regulator operated by and acting upon the pressurein the second of said systems, and means through which the position ofsaid member may determine the pressure to be maintained by saidregulator in the second of said systems.

19. The combination with first and second fluid pressure systems and apressure regulator operated by and acting upon the pressure in the firstof said systems, of means movable by pressure into varying positionsthrough which varying changes in pressure in the second of said systemsmay adjust the automatic action of said regulator.

20. The combination with first and second fluid pressure systems and apressure regulator operated by and acting upon the pressure in the firstof said systems, of means for automatically applying varying changes inpressure which occur in the second of said systems to produce effectsupon the action of said regulator and thereby determine the regulationof pressure to be provided by said lregulator in the first of saidsystems.

21. The combination with first and second fiuid pressure systems and apressure regulator operated by and acting upon the pressure in the firstof said systems, of a member movable by the pressure in the second ofsaid systems into various positions between the extremes of its movementand acting to variably position an adjustable part of said regulator,the various positions of said member being indicative of variouspressures in the second of said systems.

29,. The combination with a plurality of fluid pressure systems and apressure regulator operated by and acting upon the pressure in one ofsaid systems, of a pressure chamberconnected with another of saidsystems and having a movable member, and means through which varyingmovements of the movable member of said chamber may cause varyingchanges in the regulation of pressure by said regulatorl in said one ofsaid systems.

23. The combination with first and second fluid pressure sysems and apressure regulator operated by and acting upon the pressure in the firstof said sy tems, of a pressure chamber connected ivicii the second ofsaid systems and having a member movable by the pressure in said chamberinto various positions between the evtremes of its movement, the variouspositions of said member being indicative ot various jnfessures in thesecond of said systems, and means through which varying movements of themember of said chamber may cause varying changes in the regulatedpressure provided by said regulator in the first oi said systems.

2li. The combination with first and se ond fluid pressure systems and apressure regulator operated by and acting upon the pressure in the firstof said systems, of a movable member and means 'through which varyingmovements of said member may cause varying changes in the regulatedpressure provided by said regulator in the first of said systems,variable movements of said member being caused by and corrosponding Withchanges in pressure in the second of said systems.

9.5. rThe combination With a plurality of fiuid pressure systems and apres .ire regulator operated by and acting upon the pressure in one ofsaid systems, et a pressure chamber connected with another of saidsystems and having a movable member, and means through which varyingmovements of said member may cause varying changes in the regulation ofpressure by said regulator in said one of said tems, variable movementsof said member being caused by and correspomling with changes inpressure in said chamber. 2G. The combination with first and secondfluid pressure systems and a pressure regulator operated by and actingupon the pressure in the first of said systems, et a. pressure chamberconnected with the second of said systems and having a member movable bythe pressure in said chamber into various positions between the extremesot its movement, the various positions of said member being indicativeof various pressures in said chamber, and means through which theposition of said member may determine the regulation of pressiue to beprovided by said regulator in the first of said systems.

27. The combination with first and sccond fluid pressure systems and apressure regulator operated by and acting upon the pressure in the firstof said systems, oi a` pressure chamber connected vvith the sie ond ofsaid systems and having a member movable by the pressure in said chamberinto various positions between the extremes of its movement, the variouspositions ot said member being ind'cative of various pressures in saidchamber, .and means through which the position of said member maydetermine the effective povver of said regulator in regulating thepressure 'a the first of said systems.

Q8. rEhe combination with first and second vfluid pressure systems and apressure regulator regulating the pressure in tbe first of said systems,ot a pressure chamber connected with the second of said systems andhaving a movable member, variable movements of said member being causedby and corresponding with changes in pressure in said chamber, and meansthrough vvhich varying movements of said member may cause varyingadjustments in the au tomatic action of said regulator.

29. rEhe combination with first and seo ond fluid pressure systems and apressure regulator regulating the pressure in the first of said systems,of a pressure chamber connected with the second ot said systems andhaving a movable member acting to move an adjustable part ot saidregulator. variable .movements of said member being caused by andcorresponding with changes in pressure in said chamber.

30. rlhe combination ivith first and second fluid pressure systems and apressure regulator regulating the pressure in the first ofsaid systems,of a pressure chamber connected with the second of said systems andhaving a member movable by the pressure in said chamber into variouspositions between the extremes ot its movement, the various positions otsaid member being indicative of 'arious pressures in said chainber, andmeans through which tbc position et said member may determine anadjustment of said regulator.

The combination ivith first and sccond fluid pressure systems and apressure regulator regulating the pressure in the first ot said systems,of a pressure chamber connected with the second ot said systems andhaving a member movable by the prcssure in said chamber into variouspositions between the extremes of its movement and acting to position anadjustable part of said regulator, the various positions of said memberbeing indicative of various pressures in said chamber.

82. rThe combination with a motor for advancing a, music sheet across atracker, of means for automatically varying the motor operating pressurein accordance with and controlled by variations inthe retardinginfluence of said tracker upon said sheet.

33. The combination with a motor for advancing the music sheet of anautomatic musical instrument, of means for automatically controlling themotor operating pressure by variations in the action operating pressure.

311i. The combination with a pressure regulator having a movable member.uid regulating valve, of a pressure chamber positioned upon the outerside oit' and movable with said member, and acting upon said valve.

The combination with a pressure regulator having a pressure chamber, amovable member, and a regulating valve, of a second pressure chambersubject to pressure independent of the pressure within the lirst saidchamber and having a member movable by the pressure within said secondchambe' into various positions between the extremes of its movement, thesecond said member cooperating with the first said member in tl eoperation of said valve, and means for producing various degrees ofpressure within said second chamber to cause the positioning of thesecond said member in said various positions, each position thereofbeing in accordance with the degree of pressure within said secondchamber.

36. The combination with a pressure regulator having a movable memberand a regulating valve, of a pressure chamber movable with said memberand having a movable member movable by the pressure within said chamberinto various positions between the extremes of its movement and actingto move said valve,and means for producing various degrees of pressurewithin said chamber to cause the movement of the second said member'into said various positions, such movement being propor- `ionate to thechanges in the degree of pressure within said chamber.

37. The combination with a pressure regulator having a movable memberand a regulating valve, of a second movable member carried by saidmovable member, a pressure chamber acting to move said valve b v meansof said second movable member, said second member being movable by thepressure within said chamber into various positions between the extremesof its movement, and means for producing various pressures within saidchamber to cause the positioningr of said second movable member in saidvarious positions, said various positions being in accordance with saidvarious pressures.

38. The combination with a pressure regulator having' a movable memberand a regulating valve, of a pressure cham-- ber movable with saidmember and hav ing a second movable member movable by the pressurewithin said chamber into various positions between the extremes oiE itsmovement and acting throilgh decrease of pressure within said chamber tomove said valve in one direction, a spring acting to oppose the movementot said second movable member in said one direction, and means fordecreasing the pressure within said chamber in various degrees to causethe positioning of said second movalgile member in said variouspositions, each position thereof being in accordance with the de? greeto which the pressure within said chamber has been decreased.

39. The combination of a pressure regulator having a movable member anda reg ulatiug valve, and a pressure chamber having a movable membermovable by the pressure within said chamber into various positionsbetween the extremes of its movement and acting through decrease ofpressure within said chamber to move said valve, a spring alonedetermining the operative pressure within said pressure chamber, andmeans for cecreasing the pressure within said chamber in various degreesto act in opposition to the action of said springjn positioning themovable member of said chamber in said various positions.

10. The combination with a pressure regulator having a pressurecontrolled movable member and a pressure controlling valve operatedthereby, oit a pressure chamber positioned without said regulator, uponthe movable member thereof and operatively connected with the valveoperated thereby.

Signed at Chicago, Illinois, this eighth day of May, 1908, in thepresence of two subscribing witnesses.

JAMES CLARKE HAGEY.

l/Vitnesses H. P. COFFIN, H. WV. Jarrow.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

